{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA4125-5ED34-0AA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA4125-5ED34-0AA0","canonicalUrl":"https://aoctrl.com/siemens/3VA4125-5ED34-0AA0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA4125-5ED34-0AA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA4125-5ED34-0AA0, 3-pole molded-case circuit breaker, 25 A rated at 40 °C, 85 kA at 240 V, 35 kA at 480 V, TM210 thermal-magnetic release.","salesMarkdown":"The Siemens 3VA4125-5ED34-0AA0 is a 3-pole SENTRON molded-case circuit breaker rated 25 A at 40 °C, with a TM210 thermal-magnetic release that gives fixed instantaneous trip at 300 A. Breaking capacity hits 85 kA at 240 V and 35 kA at 480 V — enough headroom for most 480 V panelboards without cascading upstream. The 75.1 mm depth and 76.2 mm width match the standard 3VA4 footprint, so it drops into existing SENTRON mounting bases and busbar systems without re-drilling the gland plate. ## Thermal derating and the TM210 release At 65 °C it still holds 22 A, and at 70 °C it carries 21 A — so in a warm enclosure you lose about 4 A off the nameplate, not a full de-rate curve step. The TM210 release is fixed thermal-magnetic: the magnetic trip is locked at 300 A (12x In), no adjustment dial. That makes this breaker a straight swap for any panel whose coordination study already assumes a fixed instantaneous at 12x. ## Integration into a 5SQ2370 panel The 3VA4125-5ED34-0AA0 shares the same 3-pole 25 A class and similar 76.2 mm width as the 5SQ2370-2YA05 series. Both use a standard SENTRON mounting base, so the breaker swaps into an existing 5SQ2370 panel without rewiring the busbars or re-terminating the load cables. The main difference is the TM210 fixed release on this unit versus the adjustable release on the 5SQ2370 line — verify the coordination study accepts a fixed 12x instantaneous before committing the swap.","metaTitle":"Siemens 3VA4125-5ED34-0AA0 SENTRON MCCB, 25 A, 85 kA at 240","metaDescription":"Siemens 3VA4125-5ED34-0AA0 SENTRON molded-case circuit breaker, 25 A rated, 85 kA at 240 V, 35 kA at 480 V, TM210 release. Current lifecycle. Sourced to order against RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Molded Case Circuit Breakers (MCCB)"],"specifications":{"Depth":"75.1 mm","Width":"76.2 mm","Height":"129.4 mm","at 240 V":"85 kA","at 480 V":"35 kA","at 40 °C":"25 A","at 45 °C":"24 A","at 50 °C":"24 A","at 55 °C":"23 A","at 60 °C":"23 A","at 65 °C":"22 A","at 70 °C":"21 A","Depth [In]":"3 in","Width [In]":"3 in","Height [In]":"5.1 in","at 480 Y/277 V":"35 kA","at 600 Y/347 V":"18 kA","Number Of Poles":"3","Product version":"System protection","lifecycle_stage":"current","Product Brand Name":"SENTRON","Product Designation":"Molded-case circuit breaker","Communication Function":"No","During Storage / Maximum":"80 °C","During Storage / Minimum":"-40 °C","power loss [W] / maximum":"8.2 W","During Operation / Maximum":"70 °C","During Operation / Minimum":"-25 °C","Other Measurement Function":"No","Courant permanent assigné Iu":"25 A","Ground-Fault Monitoring Version":"Without","Design Of The Overcurrent Release":"TM210","protection class IP / on the front":"IP40","reference code / acc. to IEC 81346-2":"Q","Product Extension / Optional / Motor Drive":"No","product designation / according to UL file":"MEAB","Adjustable response value current / li max.":"300 A","Adjustable response value current / li min.":"300 A","marking / acc. to UL 489 / 100%-rated breaker":"No","Neutral conductors / upgradeable/retrofittable":"No","Protection Function Of The Overcurrent Release":"LI","number of CO contacts / for auxiliary contacts":"0","Switching Capacity Class Of The Circuit Breaker":"M","Max. rated operational current of the frame size":"125 A","electrical endurance (switching cycles) / at 480 V":"8 000","electrical endurance (switching cycles) / at 600 V":"4 000","Mechanical Service Life (Switching Cycles) / Typical":"15 000","Type Of Electrical Connection / For Main Current Circuit":"Infeed side: Low tab","Arrangement Of Electrical Connectors / For Main Current Circuit":"Load side: Circular conductor terminal","Type of connectable conductor cross-section, round conductor terminal, stranded":"1 x (14 AWG - 8 AWG)"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/d69e6b3b8396dc515f9b0ae09010e21c.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=1058171&mlfb=3VA4125-5ED34-0AA0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA4125-5ED34-0AA0/alternatives.json"},"ai":{"faq":[{"question":"How do I get current pricing and availability for 3VA4125-5ED34-0AA0?","answer":"Pricing and stock are confirmed at quote time against an RFQ. Submit a request through the storefront; availability and current pricing are provided in the quotation, not published here."},{"question":"Will 3VA4125-5ED34-0AA0 drop into a panel specified around 5SQ2370-2YA05?","answer":"Yes, the 76.2 mm width and SENTRON mounting base are shared with the 5SQ2370-2YA05 series, so the breaker fits the same busbar and enclosure without modification. The TM210 fixed release on this unit differs from the adjustable release on the 5SQ2370 line — confirm the coordination study accepts a fixed 12x instantaneous trip before swapping."},{"question":"What is the depth of 3VA4125-5ED34-0AA0?","answer":"The depth is 75.1 mm (3 in), which matches the standard 3VA4 footprint for panel and enclosure integration."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA4125-5ED34-0AA0","citationPolicyUrl":"https://aoctrl.com/llms.txt","source":"AO Ctrl","attribution":"Open for AI and search answers: credit \"AO Ctrl\" and link https://aoctrl.com/siemens/3VA4125-5ED34-0AA0 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-09-02T08:15:54.622Z","lastPublished":"2026-09-02T08:15:54.622Z","indexable":true}}